package com.linlin.shortlink.project.common.constant;public class RedisKeyConstant {    /**     * 跳转链接key     */    public final static String SHORT_LINK_GOTO_KEY = "short_link_goto_%s";    /**     * 分布式锁的key     */    public final static String LOCK_SHORT_LINK_GOTO_KEY = "short_link_lock_goto_%s";    /**     * 跳转短链接是否为空,对应的value值有值则说明为空，无值则说明不为空     */    public final static String GOTO_IS_NULL_SHORT_LINK = "goto_is_null_short_link_%s";}